Air-heater



G. L. DIXON.

AIR HEATER. APPLICATION FILED JAN. 8. 191a. 1 ,359 234. Patented Nov. 16, 1920.

reflect the heat UNITED STATES GEORGE L. DIXON, 0 F ALHAMBRA, CALIFORNTA.

AIR-HEATER.

Specification of Letters Patent.

Application filed January 8, 1918. Serial No. 210,819.

T 0 all whom it may concern Be it known that I, Gnonor. L. Dixon, a citizen of the United States, residing at Alhambra, in the county of Los Angeles and State of California. have invented a new and useful Air-Heater, of which the following is a specification.

This invention relates to stoves or heaters designed to supply heated air and an object of the invention is'to provide a simply con structed heater which will have a relatively small consumption of fuel for the amount of air which it heats.

Another object is to make provision for heating the space around the lower portion of the heater so as to heat the floor and the space immediately above the floor- Another object is to so construct the heater that it may be readily cleaned inside.

Other objects and advantages will appear in the subjoined detail description.

The accompanying drawings illustrate invention:

Figure 1 is a side elevation of the heater.

Fig. 2 is a vertical mid section of the heater.

Fig. 3 is a plan section on line indicated by a2 w Fig. 2. c

Fig. i is a plan section on line indicated by 00 -50 Fig. 2. I

There is provided a jacket comprising a cylindrical casing 1 and a top 2,there being a flue opening 4: near the upper end of the casing 1 and communicating with a flue 5, and there being an annular opening 6 between the lower edge of the casing 1 and a deflector plate 3.

Mounted in the lower portion of the easing 1 is an air chamber 7 having ports 8 in its side communicating with radially extending tubes 9 which project through openings 10 in the casing 1. The lower portion 11 of the air chamber 7 is substantially in the form of an inverted truncated cone so as to spread the flame from a burner 12 and downward and outward through the opening 6. The burner 12 is supplied with fuel through a pipe 13 which may be provided with a valve 14. The burner may be formed in sections, as shown, interfitting one another, the lower section 15 having a web 16 into which'is threaded a bolt 17. The upper end of the bolt 17 passes through a hollow boss or stud 18 projecting upward from the top of the upper burner section 19 and is provided on its projecting end with a nut 20 which engages the boss to hold the sections together. The boss 18 projects through a hole 21 in the lower end of the air chamber 7 and a nut 2 is screw-threaded onto the boss 18 against said lower end so as to securely fasten the burner and air chamber to one another. The burner jets 23 are positioned around the margin of the upper burner section 19 and said jets preferably extend at an angle upward and outward so as to direct the flame along the under surface of the air chamber 7. This construction provides for economical heating of the air in the air chamber and also for reflecting heat downward and outward through the opening 6-.

The cone-shaped portion of the air chamher 7 is provided with ports 24 communicatin with the upper ends of hollow legs 25 in the form of tubes which extend aslant downward and outward through the openings 6, there being notches 26 in the bottom 3' to partly accommodate the legs. The de- Hector plate 3 connects the legs to one another and forms a brace for the legs. The legs 25 are provided near their lower ends with ports 27 and these ports are preferably on the inner sides of the legs so that they cannot be readily seen when the heater is in use. The casing 1 rests on the legs'25 and the legs thus support said casing and said legs also support the air chamber.

The chamber 7 is of somewhat smaller diameter than the casing 1 so as to form segmental passages 28 between adjacent tubes 9. The top of the air chamber 7 may be flat and supported by the fiat top is a series of bafiie plates 29. The lowermost baffle plate is provided with a central open-r ing 30 and with feet 31 loosely resting on the top of the air chamber. The next to the lowermost baffle plate is also provided with feet 31 which loosely rest on the lowermost baflie plate. All but the lowermost baffle plate are provided at their marginal portions with ports 32, alternate plates having these ports arranged at opposite sides of the heater. All but the two lower bafile plates are provided with feet 33 of tubular form and the lower end of each foot rests on the next lower baffle plate. Thus the baffle plates support one another and the products of combustion pass upward through the ports 32 and to and fro from side toside of the casing. Owing to the Patented Nov. 16, 1920..

provision'of the tubular feet 33 the products of combustion do not pass directly across from the port 32 in one baffle plate to the port in the'next higher baflie plate but circulate around the feet 38 in the space between adjacent baffle plates, thus maximizing the heating erfect. The top 2 is removable and by removing the top the baffle plates 29 may be removed one at a time for cleaning or any other purpose.

In practice, the valve 14 will be opened 7 and the fuel will be lighted at the burner and from said legs through the ports 24 into the air chamber. Thus cooler air is being constantly removed from' the space immediately above the floor and this cooler air is replaced by the warm air passing from the lower portion of the jacket outward and downward through the opening 6 between the legs 25. A central opening 34 in the deflector plate 3 accommodates the burner 12 and is preferably slightly larger than the burner so as to admit air between the plate and burner and this air when heated in the lower portion of the casing may pass outward through the opening 6.

' From the foregoing it is clear that the greater portion of the heated air from the heater in fact practically all of it, will discharge from the lower part of the heater so that the space just above the floor of the room in which the heater is placed will be.

well heated.

I claim: I

1. A heater having outwardly and downwardly inclined supporting hollow legs provided with an opening at their lower end forming an air intake, a cylindrical casing having its lower end open and mounted upon said legs, the legs extending upwardly within said casing and communicating with an alr chamber mounted insaid casing, a1r

vents extending outwardly from said air chamber to discharge heated air, a deflector plate mounted between said legs and spaced to provide an annular opening between the slightly larger than the burner to provide an air intake.

2'. A heater comprising a casing having its lower end open and mounted on legs, an air heating chamber mounted in said casing and provided with vents, a deflector plate for said heater mounted between said legs and spaced to provide an annular opening between said plate and said casing, an aperture formed in said deflector plate, a burner mounted below said chamber and extending through said aperture, said aperture being larger than said burner to form an air intake port.

3. In a heater, a casing having its lower end open and mounted upon legs, a main air heating chamber having an intake and an outlet, a burner, an auxiliary air heating chamber formed below said main air heating chamber and a deflector plate secured 7 between said legs and spaced from the lower edge of said casing whereby there is provided' an outlet for said auxiliary chamber.

4. In a heater, a casing having its lower end open, legs supporting the casing, a main air heating chamber having an intake and an outlet, a burner, an auxiliary air heating chamber formed below the main air heating chamber, and a deflector plate beneath the casing spaced from the lower edge thereof, whereby there is provided an outlet for the auxiliary chamber.

Signed at Los Angeles, California, this 31st day of December, 1917.

GEORGE L. DIXON.

Witnesses:

GEORGE H. HILEs, I L. BELLE WEAVER 

